I think Glenn touched on this in an earlier post but I still have some questions. I'm using the ska-sa fork of mlib_devel (last pull probably 1 month ago).
1) Is the output labeling still wrong? i.e. First output claims to be pol02 and second is pol13. Is it in fact pol01 then pol23 or am I missing how the FFT works? 2) If I have 500 Mhz sampled data that is demuxed by two (i.e. two 250Mhz streams interleaved), can I simply connect them up to pol0 and pol1 and the output of pol02 (pol01?) would be the FFT? I could then do the same with a second channel on pol2 and pol3. 3) If the above is correct what is the channel ordering? for example if I set NFFT to 13 I have 2^12 or 4096 channels. Does each clock cycle output in sequential order 0-4096 on each clock cycle the repeat back to 0? Cheers, Ross -- Ross Williamson Research Scientist - Sub-mm Group California Institute of Technology 626-395-2647 (office) 312-504-3051 (Cell)
